Magento-optic Property Measurement of Thermally-treated P3HT:PCBM in the Near Infrared Wavelength Region

초록

We present measured magneto-optic properties of film-type poly(3-alkyl) thiophenes : Phenyl-C61-butyric acid methyl ester (P3HT:PCBM) samples treated at various thermal conditions. A large value of the Verdet constant of the sample greater than 10000 °/T/m was measured at 1550-nm wavelength when it was baked at 200 ?C during 45 minutes. A lock-in amplification method with an auto-balanced photoreceiver was used to measure the Faraday rotation of the film-type P3HT:PCBM samples under alternating current (AC) magnetic fields and to determine the Verdet constant by calibrating the measurement scheme with a reference BK7 sample.